/Engine/Source/Runtime/Core/Public/UObject/WeakObjectPtrTemplates.h
Compare weak pointers for equality. If both pointers would return nullptr fromGet()they count as equal even if they were not initialized to the same object.
template<typename RhsT, typename> bool operator== ( const [TWeakObjectPtr](API\Runtime\Core\UObject\TWeakObjectPtr)< RhsT, TWeakObjectPtrBase > & Rhs ) const